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High-oxygen-barrier film and preparation method and application thereof

A film and high-resistance technology, which is applied in the field of high oxygen-resistance film and its preparation, can solve the problems of reducing the oxygen content of packaging bags and reducing the oxygen barrier performance, so as to improve the oxygen barrier performance, block oxygen penetration, and avoid interlayer peeling Effect

Pending Publication Date: 2019-03-01
SUNRISE PACKAGING MATERIAL JIANGYIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem that the high barrier film of EVOH material in the prior art will react with water and the oxygen barrier performance is reduced, the first purpose of the present invention is to provide a kind of high oxygen barrier film, this high oxygen barrier film after water bath sterilization treatment It can still maintain a high oxygen barrier effect, further reduce the oxygen content in the packaging bag, and extend the shelf life of the product

Method used

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  • High-oxygen-barrier film and preparation method and application thereof
  • High-oxygen-barrier film and preparation method and application thereof
  • High-oxygen-barrier film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] The preparation process includes the following steps:

[0071] For the first layer (outer layer A), the raw material PA is added to the hopper 1 of the extruder, melted at a temperature of 220-250°C, and enters the die;

[0072] For the second layer (adhesive layer B1), the raw material TIE is added to the hopper 2 of the extruder, melted at a temperature of 195-220°C, and enters the die;

[0073] In the third layer (oxygen absorbing layer C1), the raw material PE+oxygen absorbing agent (mass ratio 9 / 1) is added to the hopper 3 of the extruder, melted at a temperature of 170-195°C, and enters the die;

[0074] For the fourth layer (adhesive layer B2), the raw material TIE is added to the hopper 4 of the extruder, melted at a temperature of 195-220°C, and enters the die;

[0075] In the fifth layer (transition layer D1), the raw material PA is added to the hopper 5 of the extruder, melted at a temperature of 220-250°C, and enters the die;

[0076] For the sixth layer (...

Embodiment 2

[0083] The preparation process includes the following steps:

[0084] For the first layer (outer layer A), the raw material PA is added to the hopper 1 of the extruder, melted at a temperature of 220-250°C, and enters the die;

[0085] For the second layer (adhesive layer B1), the raw material TIE is added to the hopper 2 of the extruder, melted at a temperature of 195-220°C, and enters the die;

[0086] In the third layer (oxygen absorbing layer C1), the raw material PE+oxygen absorbing agent (mass ratio 7 / 3) is added to the hopper 3 of the extruder, melted at a temperature of 170-195°C, and enters the die;

[0087] For the fourth layer (adhesive layer B2), the raw material TIE is added to the hopper 4 of the extruder, melted at a temperature of 195-220°C, and enters the die;

[0088] In the fifth layer (transition layer D1), the raw material PA is added to the hopper 5 of the extruder, melted at a temperature of 220-250°C, and enters the die;

[0089] For the sixth layer (...

Embodiment 3

[0096] The preparation process includes the following steps:

[0097] For the first layer (outer layer A), the raw material PA is added to the hopper 1 of the extruder, melted at a temperature of 220-250°C, and enters the die;

[0098] For the second layer (adhesive layer B1), the raw material TIE is added to the hopper 2 of the extruder, melted at a temperature of 195-220°C, and enters the die;

[0099] In the third layer (oxygen absorbing layer C1), the raw material PE+oxygen absorbing agent (mass ratio 1 / 1) is added to the hopper 3 of the extruder, melted at a temperature of 170-195°C, and enters the die;

[0100] For the fourth layer (adhesive layer B2), the raw material TIE is added to the hopper 4 of the extruder, melted at a temperature of 195-220°C, and enters the die;

[0101] In the fifth layer (transition layer D1), the raw material PA is added to the hopper 5 of the extruder, melted at a temperature of 220-250°C, and enters the die;

[0102] For the sixth layer (...

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Abstract

The invention discloses a high-oxygen-barrier film and a preparation method and application thereof. The high-oxygen-barrier film successively comprises an outer layer A, a bonding layer B2, an oxygenabsorption layer C1, a bonding layer B2, a barrier layer D, a bonding layer B3, an oxygen absorption layer C2 and a heat sealing layer E from outside to inside; and the barrier layer D comprises a middle layer D2 and transition layers D1 and D3 on the two sides of the middle layer D2. Each of the oxygen absorption layers C1 and C2 consists of an oxygen absorption agent and polyolefin resin, and the main components of each oxygen absorption agent are ethyl methacrylate and / or cyclohexene acrylate terpolymer. According to the high-oxygen-barrier film, each oxygen absorption layer consisting ofthe oxygen absorption agent and the polyolefin resin is introduced, wherein each oxygen absorption agent can produce free radicals after being illuminated by ultraviolet before packaging, the free radicals are combined to oxygen to achieve an oxygen absorption effect, oxygen can be stopped effectively, the oxygen stopping property of the film is greatly improved, moreover, the film system can stably exist in air before illumination of the ultraviolet, and after triggering, degradation by-products cannot be generated.

Description

technical field [0001] The invention belongs to the technical field of packaging films, and relates to a high oxygen resistance film, a preparation method and application thereof. Background technique [0002] EVOH is a copolymer of ethylene and vinyl alcohol, in a humid environment, it will react with H 2 O forms a hydrogen bond, and the absorbed water acts as a plasticizer for EVOH itself, changing the intermolecular force, thereby reducing its oxygen barrier performance rapidly. The oxygen transmission rate before bacteria is 2cc / [m 2 day], is a kind of food packaging film with high oxygen resistance that is widely used in the food packaging industry. Usually, the high oxygen barrier food packaging film will be sterilized in a water bath after packaging the food, but because the EVOH material itself will interact with H 2 The reason for the O reaction is that when the temperature is 30°C and the humidity is 80%, the oxygen barrier performance of the EVOH material will ...

Claims

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Application Information

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IPC IPC(8): B32B7/12B32B27/34B32B27/32B32B27/08B32B27/18B32B27/30B65D65/40
CPCB65D65/40B32B7/12B32B27/08B32B27/18B32B27/30B32B27/32B32B27/34
Inventor 陈德元焦逸清杨伟
Owner SUNRISE PACKAGING MATERIAL JIANGYIN CO LTD
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